Datasheet LTC3100 (Analog Devices) - 4
| Manufacturer | Analog Devices |
| Description | 1.5MHz Synchronous Dual Channel DC/DC Converter and 100mA LDO |
| Pages / Page | 26 / 4 — ELECTRICAL CHARACTERISTICS: STEP-DOWN CONVERTER. The. denotes the |
| File Format / Size | PDF / 413 Kb |
| Document Language | English |
ELECTRICAL CHARACTERISTICS: STEP-DOWN CONVERTER. The. denotes the
Model Line for this Datasheet
Text Version of Document
LTC3100
ELECTRICAL CHARACTERISTICS: STEP-DOWN CONVERTER The
l
denotes the specifications which apply over the full operating temperature range. Extended commercial grade: –40°C to 85°C, VINBK = 3.3V, TA = 25°C, unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS
RUNBK Input High Voltage l 0.9 V RUNBK Input Low Voltage l 0.3 V RUNBK Input Current RUNBK = 1.2V 0.8 2 µA Soft-Start Time 1.3 ms PGBK Threshold, Falling Referenced to Feedback Voltage –8 % PGBK Hysteresis Referenced to Feedback Voltage 3 % PGBK Voltage Low 5mA Load 65 mV PGBK Leakage Current PGBK = 5.5V 0.01 10 µA
ELECTRICAL CHARACTERISTICS: LDO REGULATOR The
l
denotes the specifications which apply over the full operating temperature range. Extended commercial grade: –40°C to 85°C, VBST = 3.3V, VLDO = 3V, TA = 25°C, unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS
Input Voltage Range l 1.8 5.25 V Output Voltage Adjust Range (Note 3) l 0.618 5.25 V Feedback Voltage l 582 600 618 mV Maximum Output Current l 100 120 mA Feedback Input Current FBLDO = 600mV 1 30 nA Line Regulation VIN = 3.3V to 5.25V 0.1 %/V Load Regulation From 10mA to 100mA Load 0.1 % Dropout Voltage IOUT = 100mA l 130 200 mV Ripple Rejection (PSRR) Frequency = 1.5MHz at ILOAD = 50mA, COUT = 2.2µF (Note 3) 35 dB Short-Circuit Current Limit FBLDO < 582mV l 120 160 mA Soft-Start Time 0.3 ms RUNLDO Input High Voltage l 0.9 V RUNLDO Input Low Voltage l 0.3 V RUNLDO Input Current RUNLDO = 1.2V 0.8 2 µA Quiescent Current—Active RUNLDO = 3.3V, Measured on VBST 26 40 µA RUNBST = RUNBK = 0V, VINBK = 0V
ELECTRICAL CHARACTERISTICS: COMMON CIRCUITRY The
l
denotes the specifications which apply over the full operating temperature range. Extended commercial grade: –40°C to 85°C, VBST or VINBK = 3.3V, TA = 25°C, unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS
MODE Input High Voltage l 0.9 V MODE Input Low Voltage l 0.3 V MODE Input Current MODE = 0V –3.3 –5 µA MODE = 5V 1.7 3 µA 3100fb 4 For more information www.linear.com/LTC3100 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Typical Application Related Parts
ELECTRICAL CHARACTERISTICS: STEP-DOWN CONVERTER The
l
denotes the specifications which apply over the full operating temperature range. Extended commercial grade: –40°C to 85°C, VINBK = 3.3V, TA = 25°C, unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS
RUNBK Input High Voltage l 0.9 V RUNBK Input Low Voltage l 0.3 V RUNBK Input Current RUNBK = 1.2V 0.8 2 µA Soft-Start Time 1.3 ms PGBK Threshold, Falling Referenced to Feedback Voltage –8 % PGBK Hysteresis Referenced to Feedback Voltage 3 % PGBK Voltage Low 5mA Load 65 mV PGBK Leakage Current PGBK = 5.5V 0.01 10 µA
ELECTRICAL CHARACTERISTICS: LDO REGULATOR The
l
denotes the specifications which apply over the full operating temperature range. Extended commercial grade: –40°C to 85°C, VBST = 3.3V, VLDO = 3V, TA = 25°C, unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS
Input Voltage Range l 1.8 5.25 V Output Voltage Adjust Range (Note 3) l 0.618 5.25 V Feedback Voltage l 582 600 618 mV Maximum Output Current l 100 120 mA Feedback Input Current FBLDO = 600mV 1 30 nA Line Regulation VIN = 3.3V to 5.25V 0.1 %/V Load Regulation From 10mA to 100mA Load 0.1 % Dropout Voltage IOUT = 100mA l 130 200 mV Ripple Rejection (PSRR) Frequency = 1.5MHz at ILOAD = 50mA, COUT = 2.2µF (Note 3) 35 dB Short-Circuit Current Limit FBLDO < 582mV l 120 160 mA Soft-Start Time 0.3 ms RUNLDO Input High Voltage l 0.9 V RUNLDO Input Low Voltage l 0.3 V RUNLDO Input Current RUNLDO = 1.2V 0.8 2 µA Quiescent Current—Active RUNLDO = 3.3V, Measured on VBST 26 40 µA RUNBST = RUNBK = 0V, VINBK = 0V
ELECTRICAL CHARACTERISTICS: COMMON CIRCUITRY The
l
denotes the specifications which apply over the full operating temperature range. Extended commercial grade: –40°C to 85°C, VBST or VINBK = 3.3V, TA = 25°C, unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS
MODE Input High Voltage l 0.9 V MODE Input Low Voltage l 0.3 V MODE Input Current MODE = 0V –3.3 –5 µA MODE = 5V 1.7 3 µA 3100fb 4 For more information www.linear.com/LTC3100 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Typical Application Related Parts
